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Provision for legal proceedings and judicial deposits - Summary of Provision for Legal Proceedings and Judicial Deposits (Detail) - BRL (R$)
R$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of other provisions [line items]      
Provision for legal proceedings R$ 1,644,061 R$ 1,360,898 R$ 1,354,171
Judicial deposit 923,061 875,842  
Legal proceedings provision, tax [member]      
Disclosure of other provisions [line items]      
Provision for legal proceedings 647,610 635,406 589,180
Judicial deposit 500,484 462,197  
Civil, environmental and regulatory [member]      
Disclosure of other provisions [line items]      
Provision for legal proceedings 585,034 350,769  
Judicial deposit 169,857 140,833  
Legal proceedings provision, labor [member]      
Disclosure of other provisions [line items]      
Provision for legal proceedings 411,417 374,723 R$ 432,464
Judicial deposit R$ 252,720 R$ 272,812